Detachable magneto-armature heads and core



R. A. OGLESBY. DETACHABLE MAGNETO ARMATURE HEADS AND CORE.

APPLICATION FILED MAR-1911917.

,151, Patented Apr. 27,192.

m b mqex UNITED STATES PATENT OFFICE.

mcrmnn A. OGLESBYIIEOF SOUTH BEND,- INDIANA, ASSIGNOR o QUICK ACTION IGNITION COMPANY. OF SOUTH BEND. INDIANA, A CORPORATION OF INDIANA.

DETACHABLE MAGNETO-ARMATURE HEADS AND CORE.

Specification of Letters Patent. Patented Apr. 27, 1920.

Application filed March 13, 1917. Serial No. 155,918.

Ma gneto-Armature Heads and C ores, of which the following is a specification. My invention relates to improvements in loxletachable magneto armature heads and core and it appertains more especially to the features pointed out intheannexed claims.

The purpose of my invention is to provide a form of. armature construction bywhich laminated heads and the core connecting the same are made detachable so that marked economies of production are attained by I reason of the fact that the coils can be ma- ."chine wound in advance quantities on symmetrical spools or holders and subsequently assembled on an interlaced core and its heads thus obviating the tedious and expensive winding operations when the core and heads are made integral.

'ith these and other ends in view I illus- .trate in the accompanying drawing such an instance of adaptationa's will disclose the fundamental features without limiting myself to the specific details shown.

Figure 1 shows a perspective view of the detachable laminated members.

Fig; 2 is an elevation in section of acoil in position on the core 'between the armature heads.

Fig. 3 is a transverse elevation in section showing the symmetrical relation of the coil.

Fig. l is an elevation of a detached head lamination with an overhanging projection. Fig. 5 is an elevation of a detached head and combined core lamination.

'Fig. 6 is an elevation of a detached head lamination withone edge out off.

'Fig. '4 is an elevationof assembled heads and core. instancing heads without over-v tached to hanging pro ect1ons.

In. practically carrying out my invention I utilize adaptations of the features instanced in the drawings as "willsecure1'e-,

sultsfwith the least expenditure :of time and materials...and which will enable one to use laminated magnet head's, whether used spearmatures or-otherwise, combined with interlaced cores so as to permitthe very ready assembling of machine wound coils thereby avoiding costly and slow handmade windings.

lVhen the cores are made with detachable heads a source of weakness lies in the joining faces of the heads and cores which in time become OXldiZQCl and cause a serious the heads and cores are found of one piece stampings the magnets can not be threaded onto the core but thevmust be dealt with individually each magnet being hand-wound. To avoid this expense and enable one tons-e machine wound magnets into which core members may be inserted from opposite ends of the magnet I form 'thecore part with an integral head portion at one end only and assemble these in a right. and left relation with head portions alone so as to build up the required dimension of complete heads.

As instanced in the drawing the construction which enables these ends to be attained embodies the use of full head stainpings 1 combined head and core'stampings having a head portion 2 and a core l and narrow head pieces 3'. The parts are assembled sub stantially as shown in Fig. 1- so as to produce right and left hand members which interlace into each 'other, the core parts being placed sideby side within the iimer magnet tube 9. In order that such members may be handled as independent units they are assembled as shown in'Fig. l and held in position by rivets5 which pass through all the laminations .of each group. hen the cores l are threaded through the magnet, holes 7 at the ends of the coresl will register with holes6 formed in the head plates 1. .Screws may be passed through all the holesfi and T and the completed magnet atany desired support by means of such screws.

The narrow heads 3 when assembled in alternate relation in the completed heads form slots lObeneath their lower edges 15- coil on the inner tube 9. At any event the windings are retained within the tubes by heads 16. i

It is immaterial as to the specific kind of heads which are use Those having over hanging portions 14: admit of an increased winding space thereunder. If desired heads 12 and core 11 may meet the needs of special exigencies. An outer thickened assembling plate 13 tlnjough whichCounter sink fastening. screws can project While passing through holes 6 may be provided if'desired.

From the'brief description it will be seen that a very simple solution of a rather difficult problem is secured by means of the different parts instanced. 1 am enabled to secure economies of production, standardiation hitherto indifi'erently attained.

I do not. limit myself to the specific p roportions or shapes of the heads or cores "and neither do I limit myself to any special form of magnet but I lay claim broadly to intercoil having an opening .therethrough and adapted to receive the core part of each zation of parts and an eiijciency of opergroup of laminae, and means for holding the "groups. in engagement withieach other so that the curvature of one will be concentric with that of the other, the center of such curves lying entirely without the assembled parts.

combined core and head laminae having an enlargement constituting an externally curved projection. at one end of the core only, other laminae similarly curved as head portions only, means for holding the several lamina assembled to constitute a unit head and half-core; another unit formed with duplicate members but differently grouped,

each head having a slot formed therein both slotsbeing out of alinement'with. each other but adapted to receive the free ends of the core portion of each unit, a magnet spool threaded over the "core parts and means for holding the several parts in assembled rela- 1 tion, so that the curved arcs are approximately at {the same radius whose center is entirely outside of the assembled parts.

8. 'An article of manufacture comprising a combined magnet core and curved head lamination formed integrally with eachother, similarly formed duplicate laminae assembled adjacent-each other to constitute a group, independently formed head laminae similarly curved and assembled adjacent the other heads toconstitute a half-core unit,

duplicate core and head parts constituting a second group, similarly shaped curved .h eadsassembled with the headsof the second group, to also constitute a half-core unit both units being assembled together so as to form'a winding space between and beneath the heads.

In testimony whereof I affix my signature in the presence-of'two witnesses.

RICHARD A. OGLESBY.

WVitnesses A. L. AMSTUTZ, N. S." AMsTUTZ.

2. In electroma-gnets for armatures, etc, 

